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WO2000011748A2 - Antenne comprenant des organes de connexion coulissants - Google Patents

Antenne comprenant des organes de connexion coulissants Download PDF

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Publication number
WO2000011748A2
WO2000011748A2 PCT/SE1999/001411 SE9901411W WO0011748A2 WO 2000011748 A2 WO2000011748 A2 WO 2000011748A2 SE 9901411 W SE9901411 W SE 9901411W WO 0011748 A2 WO0011748 A2 WO 0011748A2
Authority
WO
WIPO (PCT)
Prior art keywords
circuitry
signals
antenna device
elongated conductive
radiating means
Prior art date
Application number
PCT/SE1999/001411
Other languages
English (en)
Other versions
WO2000011748A3 (fr
Inventor
Richard Bohannan
Original Assignee
Allgon Ab
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Allgon Ab filed Critical Allgon Ab
Priority to GB0103597A priority Critical patent/GB2357637B/en
Priority to JP2000566915A priority patent/JP2002523949A/ja
Priority to US09/744,967 priority patent/US6392604B1/en
Priority to AU56663/99A priority patent/AU5666399A/en
Publication of WO2000011748A2 publication Critical patent/WO2000011748A2/fr
Publication of WO2000011748A3 publication Critical patent/WO2000011748A3/fr

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/12—Supports; Mounting means
    • H01Q1/22—Supports; Mounting means by structural association with other equipment or articles
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q11/00—Electrically-long antennas having dimensions more than twice the shortest operating wavelength and consisting of conductive active radiating elements
    • H01Q11/02—Non-resonant antennas, e.g. travelling-wave antenna
    • H01Q11/08—Helical antennas
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/12—Supports; Mounting means
    • H01Q1/22—Supports; Mounting means by structural association with other equipment or articles
    • H01Q1/24—Supports; Mounting means by structural association with other equipment or articles with receiving set
    • H01Q1/241—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM
    • H01Q1/242—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM specially adapted for hand-held use
    • H01Q1/243—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM specially adapted for hand-held use with built-in antennas
    • H01Q1/244—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM specially adapted for hand-held use with built-in antennas extendable from a housing along a given path
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/36—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith
    • H01Q1/362—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith for broadside radiating helical antennas
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q5/00—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
    • H01Q5/40—Imbricated or interleaved structures; Combined or electromagnetically coupled arrangements, e.g. comprising two or more non-connected fed radiating elements

Definitions

  • the present invention relates in general to an antenna device, for receiving and transmitting RF signals with a sliding connector means, and more specifically to an antenna device for receiving and transmitting RF signals, which is electrically coupled to radio circuitry through a sliding connector during its extension and retraction.
  • Such a user will still have requirements on the size of his satellite communication device, as he undoubtedly will compare his ordinary cellular communication device with his satellite communication device. Since the distance to orbiting or stationary satellites is so great, satellite antennas need to be able to handle very weak signals. The antennas used will thus generally be larger and require less obstacles compared to antennas for cellular communication devices, and will consequently take a considerable amount of the space of a satellite communication device. The need for reducing the size of the antennas for satellite communication devices is thus large and anyone being able to reduce the size for such an antenna will have a considerable competitive advantage.
  • the somewhat larger antenna unit in a satellite communication device has posed some problems.
  • the antenna unit can be rotated around an axis so as to fold the antenna unit along one side of the satellite communication device when not in talk position. Thereby, the space taken by the terminal device is considerably less when in a standby mode.
  • One problem, which occurs with this solution, is that the antenna is badly suited to receive paging signals from the satellite in the standby mode. This can be remedied by introducing an extra paging antenna on the top of the satellite communication device specifically designed for receiving signaling in the standby mode. This, however generates a new problem namely with how to switch between the different antennas in dependence of the operating mode .
  • Another solution requires the satellite device to have a specific position during standby, such as upside down.
  • the US patent application No. 5,628,057 discloses a satellite communication device with an antenna unit connected thereto at a pivot point .
  • the object of the present invention is thus to achieve a reliable and efficient connection between circuitry in a radio communication device and an extendable and retractable antenna device, which is operable in both extended and retracted position.
  • Another object of the present invention is to achieve a reliable and efficient connection between circuitry in a radio communication device and an extendable and retractable antenna device, which is operable during extension and retraction.
  • an antenna device with radiating means, movable between a extended and a retracted position.
  • Said antenna device having a feeding arrangement comprising at least a first connection member electrically coupled to and movable with said radiating means.
  • Said feeding arrangement further comprises at least a second connection member arranged for being electrically coupled to said first circuitry and fixedly mounted on a support unit.
  • said first connection member being electrically coupled to said second connection member in all positions between and including said extended and retracted positions.
  • said first connection member comprises a multitude of resilient conductive members.
  • Said second connection member comprising a multitude of elongated conductive strips arranged on one side of a dielectric medium and with a ground plane arranged on an opposite side of said dielectric medium.
  • Each resilient conductive member of said multitude of conductive members being arranged to exert a force against a corresponding elongated conductive strip so as to enable electrical coupling between said conductive member and said conductive strip.
  • Each resilient conductive member being arranged to slide along said elongated conductive strip when said radiating means moves between said first and second positions.
  • the objects of the present invention are obtained by providing an antenna device according to the above, wherein said antenna device further comprises a switch. Said switch being arranged for disconnecting said second connection member and connecting said first circuitry to said radiating means when said radiating means is in said second position.
  • the objects of the present invention are obtained by providing an antenna device according to the above, wherein at least one of said elongated conductive strips having irregular shaped edges. Said irregular shaped edges being adjusted so that the elongated conductive strip having an input impedance, seen from a first point where the resilient conductive member connects to the elongated conductive strip when said radiating element is in extended position, and towards said open end which is very large compared to the input impedance seen from said first points and towards the radiating means.
  • These irregular shaped edges can for instance be obtained by protrusions and/or recesses .
  • An advantage with the present invention is that a reliable connection between the circuitry in a radio communication device and an extendable radiating means is obtained in extended and retracted position as well as during extension and retraction. Another advantage with the present invention is that the shortest possible electrical transmission distance is kept between the radiating element and the radio circuitry in both extended and retracted position.
  • An advantage is that several independent, electrically separate connections between circuitry in a radio communication device and an extendable radiating means can be obtained easily and reliably.
  • An advantage is that power and control signals can easily and reliably be fed to circuitry located on the radiating means .
  • An advantage is that transmitted and received signals can be conducted on separate lines between the radiating means and the circuitry in the radio communication device.
  • An advantage is that signals to different radiating elements, arranged for receiving and transmitting RF signals in different systems can be conducted on separate lines between the radiating means and the circuitry in the radio communication device.
  • said elongated conductive strip may have irregular shaped edges, such as protrusions or recesses, so that the elongated strip is to be regarded as an open circuit when said radiating means is in its extended position.
  • figure 1 shows an prior art antenna arrangement for a satellite communication terminal having a rotatable main antenna and an auxiliary antenna
  • figure 2 shows an axially extendable antenna means connected with coaxial cables to the circuitry of a radio communication device
  • figure 3 shows a perspective view of an antenna device and radio communication device according to a first embodiment of the invention
  • FIG. 4 shows a detailed view of the connector member according to the first embodiment of the invention
  • figure 5a, 5b and 5c schematically shows different electrical configurations according to a preferred embodiment of the invention
  • figure 6 shows a schematic signal strength diagram during the extension of the inventive antenna means according to one embodiment of the invention
  • figure 7 schematically shows the inventive antenna device according to a third embodiment of the invention
  • figure 8a, 8b and 8c shows a detailed view of a connector member according to a fourth embodiment of the invention
  • figure 9a and 9b shows different views of a connector member according to a fifth embodiment of the invention
  • figure 10a and 10 b shows different views of a connector member according to a sixth embodiment of the invention
  • figure 11 shows a view of a connector member according to a seventh embodiment of the invention
  • figure 12 schematically shows an exploded view according to a preferred embodiment of the invention.
  • Figure 1 shows a radio communication device with a prior art antenna 101 for satellite communication.
  • the antenna 101 is mounted on the backside of the radio communication device at a pivot point and can thus be rotated to an active position, pointing essentially upwards, or to an inactive position, pointing essentially downwards.
  • a patch antenna 102 is mounted on top of the radio communication device for receiving paging signals when the primary antenna 101 is in an inactive position.
  • the patch antenna 102 can be avoided if the radio communication device is positioned up side-down.
  • the primary antenna 101 would then be pointing essentially upwards, towards the communication satellite, and would be able to receive paging signals .
  • an extendable antenna unit may be used instead. With an extendable and retractable antenna unit, the same antenna unit may be used for paging signals as well as for use in talk position.
  • FIG. 2 shows a radio communication device 201 with extendable radiating means 202.
  • the radiating means is connected to circuitry 203 mounted on a printed circuit board PCB 204 in the radio communication device 201.
  • the connection is achieved with a first coaxial cable 205 and a second coaxial cable 206.
  • FIG. 3 shows a radio communication device 301 with a radiating means 302 and circuitry 303 mounted on a PCB 30 .
  • Feeding arrangement 305 being arranged for feeding signals from the circuitry 303 to the radiating means 302.
  • Said feeding arrangement 305 comprises first, second and third connection members denoted 306, 307 and 308 respectively, and fourth, fifth and sixth connection members denoted 309, 310 and 311.
  • the first, second and third connector member are so called pogo pins, telescoping contacts with spring action, mounted on, and movable with the radiating means 302.
  • the fourth, fifth and sixth connector members are elongated conductive strips mounted on a dielectric medium with conductive backside coupled to ground and fixedly attached to the casing of the radio communication device. The casing thus act as a support member to the elongated conductive strips.
  • the pogo pins 306, 307 and 308 are resilient, spring loaded and exert a force on elongated conductive strips 309, 310 and 311 so as to enable electrical coupling between the first and fourth, the second and fifth and the third and sixth connector member, respectively.
  • figure 6 is the damping of the signal plotted against the distance the antenna is injected into the well of the portable phone for two different frequencies. As can be seen in figure 6 one dip occurs for the 900 MHz frequency and two dips occur for the 1600 MHz frequency. The dip in transmission efficiency will not have a substantial adverse effect of the performance of the communication since the communication system is designed for allowing short breaks in transmission. Of course, for signals which is not RF signals, such as power and control signals, no such dips in transmission will occur.
  • the radiating means further comprises a first radiating element 312.
  • the first radiating element consists of a number N, where N being an integer, greater than 1, of conductive, helical strips arranged for receiving and transmitting circular polarized RF signals. It would of course also be possible to use any other radiating means suitable for receiving and transmitting circular polarized RF signals, such as helical conductive wires.
  • the first radiating element 312 is connected, through a phasing network, to the first connector member 306 and further through the fourth connector member 309 to the circuitry 303.
  • a second radiating element is denoted 313 and is arranged for receiving and transmitting planar polarized RF signals such as is used for earth based radio communication, for instance GSM, DECT, AMPS, D-AMPS, PCS etc.
  • the second radiating element is connected to the third connector member 308 and further through the sixth connector member 311 to the circuitry 303.
  • a protective cap is denoted 314 and is only partly shown for sake of clarity.
  • the cap 314 also comprises guiding protrusions (not shown) which connects with corresponding guiding surfaces positioned on the surrounding walls (not shown) .
  • the guiding profiles may be positioned on a support, arranged for supporting the first radiating element 312.
  • Figure 4 shows a top view of the radiating means 302 and more clearly discloses a well 402 from which the radiating means 302 is extendable and retractable. Guiding protrusions 402 engage guiding surfaces 403 so that a sliding movement of the radiating means 302 is possible. This makes it possible to extend the radiating means 302 out of the well 402 and retract said means back into the well 402 again.
  • Figure 12 shows an exploded view of the main components according to one embodiment of the invention.
  • five different connections are used between the radiating means and the circuitry in a radio communication device.
  • a first PCB is denoted 1201 and a second PCB is denoted 1202.
  • a first radiating element is denoted 1203 and is consisting of a number of helically wounded conductive strips on a thin flexible carrier mounted on a hollow support 1204. Said first radiating element is arranged for receiving and transmitting circular polarized RF signals mainly for communication with a satellite.
  • Said first radiating element 1203 is coupled to a phasing network and a diplexer (not shown) when necessary.
  • the phasing network being arranged to transform circularly polarized RF signals to and from signals suitable for transmission to circuitry in a radio communication device.
  • the diplexer separates received signals R x and transmitted signals T x into two separate signals carried on two separate conductors, alternatively two separate phasing networks can be utilized for the transmission frequency T x and the receiving frequency R x .
  • the T x and R x signals are connected to a first and second connector member 1205 and 1206 respectively, which in turn are coupled to third and fourth connector member 1207 and 1208 respectively. Said third and fourth connector members 1207 and 1208 being further connected to circuitry in a radio communication device.
  • first and third, and second and fourth connector members are also power and control signals, for instance to a LNA (Low Noise Amplifier) , conducted to the phasing network and the diplexer positioned on the first or second PCB 1201, 1202.
  • LNA Low Noise Amplifier
  • a second radiating element is denoted 1209 and is a helical conductive coil arranged for receiving and transmitting RF signals in for instance the GSM, DECT or AMPS systems.
  • the second radiating element is positioned inside the support 1204 and is connected to circuitry in a radio communication device through fifth, sixth, seventh and eighth connector members denoted 1210, 1211, 1212 and 1213 in a similar way as was described for said first radiating element. However, no phasing network or diplexers are generally required.
  • Ninth and tenth connector members denoted 1214 and 1215 are used for carrying signal ground from the circuitry.
  • Said second, fourth, sixth, eight and tenth connector members are mounted on a dielectric medium or carrier 1216 which on the backside has a ground plane 1217.
  • One advantage with using strips compared to coaxial connections is that loss in connections and transmission is significantly reduced.
  • FIG. 5a, 5b and 5c shows schematic circuit diagrams of different configurations according to a preferred embodiment of the invention.
  • 501 is a first connector member denoted and with 502 is a second connector member denoted.
  • 503 is a radiating means denoted and 504 denote a circuitry in a radio communication device.
  • Said second connector member 502 has a first end denoted 505 and a second end 506 connected to said circuitry 504.
  • the second connector member 502 electrically connects the radiating means 503 to the circuitry 504.
  • the radiating means 503 is shown in its extended position connected to the circuitry 504.
  • the first end 505 is in this position an open end.
  • the electrical length of the second connector member 502 is selected so that the second connector member 502 has very high impedance at the second end 506 compared to the radiating means 503, for the selected frequency band, and can therefore be regarded as a open circuit.
  • the radiating means 503 is disclosed in a position between the extended and the retracted position. The radiating means 503 is still coupled to the circuitry 504 through said first and second connector members .
  • Figure 7 shows an arrangement where circuitry 701 is connected to second connector member 702 at the first end 703.
  • the second connector member 702 is an open stub and may be disconnected with a switch (not shown) or adjusted to high input impedance as described above.
  • Figure 8a shows a side view
  • figure 8b shows a front view
  • figure 8c shows a top view of connector members 801, 802 and 803 where flexible, wire members are used.
  • a radiating means is denoted 804, on and/or in the support is radiating elements mounted (not shown) .
  • the resilient members 801, 802 and 803 will glide on elongated connector members (not shown) .
  • the resilient connector members 801, 802 and 803 is flexible and will exert a force on the elongated connector members so as to enable electrical contact.
  • one wire member is shown depressed to indicate the flexibility of the wire members.
  • Figure 9a shows a front view of an arrangement with elongated conductive strips disclosed in figure 3 and 12, and figure 9b shows a view taken at I-I.
  • a dielectric medium or carrier is denoted 901 and a conductive sheet is denoted 902.
  • the conductive sheet 902 being coupled to ground.
  • First, second, third, fourth and fifth elongated conductive members are mounted on the dielectric carrier 901 and denoted 903, 904, 905, 906 and 907.
  • Figure 10a shows a front view according to another embodiment of said elongated conductive strips and figure 10b shows the arrangement of figure 10a taken at line II-II.
  • a dielectric medium is denoted 1001 and a conductive sheet is denoted 1002.
  • the conductive sheet 1002 is coupled to ground.
  • First, second and third elongated conductive strips are denoted 1003, 1004 and 1005 respectively.
  • the third elongated strip 1005 has protrusions 1006 the adjust the electrical length of the third elongated conductive strip 1005.
  • Figure 11 shows the elongated conductive strips according to another embodiment.
  • a first dielectric medium or carrier is denoted 1101
  • a second dielectric medium or carrier is denoted 1102
  • a ground plane is denoted 1103.
  • the first and second dielectric carriers are arranged with a small distance so that a recess 1104 is achieved where a first connector member (not shown) , electrically connected to radiating means (not shown) , may electrically couple to said ground plane 1103.

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Support Of Aerials (AREA)
  • Details Of Aerials (AREA)
  • Telephone Set Structure (AREA)
  • Connector Housings Or Holding Contact Members (AREA)

Abstract

La présente invention permet d'assurer une connexion fiable et efficace entre les circuits d'un dispositif de radiocommunication et une antenne extensible et rétractable, laquelle fonctionne à la fois en position détendue et en position rétractée et pendant son extension et sa rétraction. On assure cette connexion en prenant une antenne pourvue d'organes rayonnants, capables de passer d'une position détendue à une position rétractée. Cette antenne présente par ailleurs un dispositif d'alimentation comprenant au moins une première connexion (306, 307, 308; 801, 802, 803) couplée électriquement audits organes rayonnants de manière à pouvoir se déplacer conjointement à ceux-ci. Ce dispositif d'alimentation est également pourvu d'une seconde connexion (309, 310; 903, 904, 905, 906, 907; 1003, 1004, 1005) conçue pour être couplée électriquement aux premiers circuits et montée de manière stable sur une unité support. La première connexion est également couplée électriquement à cette seconde connexion dans toutes les positions, que ce soit dans les positions dépliée et rétractée ou dans les positions intermédiaires.
PCT/SE1999/001411 1998-08-19 1999-08-19 Antenne comprenant des organes de connexion coulissants WO2000011748A2 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
GB0103597A GB2357637B (en) 1998-08-19 1999-08-19 Antenna device comprising sliding connector means
JP2000566915A JP2002523949A (ja) 1998-08-19 1999-08-19 スライド式コネクターからなるアンテナ装置
US09/744,967 US6392604B1 (en) 1998-08-19 1999-08-19 Antenna device comprising sliding connector means
AU56663/99A AU5666399A (en) 1998-08-19 1999-08-19 Antenna device comprising sliding connector means

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE9802772-5 1998-08-19
SE9802772A SE9802772D0 (sv) 1998-08-19 1998-08-19 Antenna device comprising sliding connector means

Publications (2)

Publication Number Publication Date
WO2000011748A2 true WO2000011748A2 (fr) 2000-03-02
WO2000011748A3 WO2000011748A3 (fr) 2000-06-02

Family

ID=20412287

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/SE1999/001411 WO2000011748A2 (fr) 1998-08-19 1999-08-19 Antenne comprenant des organes de connexion coulissants

Country Status (8)

Country Link
US (1) US6392604B1 (fr)
JP (1) JP2002523949A (fr)
KR (1) KR100618538B1 (fr)
CN (1) CN1213508C (fr)
AU (1) AU5666399A (fr)
GB (1) GB2357637B (fr)
SE (1) SE9802772D0 (fr)
WO (1) WO2000011748A2 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001099230A1 (fr) * 2000-06-23 2001-12-27 Koninklijke Philips Electronics N.V. Systeme d'antenne

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1154514B1 (fr) 1999-12-09 2004-03-03 Mitsubishi Denki Kabushiki Kaisha Module radio mobile et antenne
US7262737B2 (en) * 2005-08-15 2007-08-28 Palm, Inc. Extendable antenna architecture
GB0700276D0 (en) * 2007-01-08 2007-02-14 Sarantel Ltd A dielectrically-loaded antenna
CN110323539B (zh) * 2018-03-30 2021-04-13 Oppo广东移动通信有限公司 电子设备及其控制方法

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU8799291A (en) * 1990-11-23 1992-05-28 Andrew Corporation Improved antenna structure
DK168346B1 (da) * 1991-03-19 1994-03-14 Dancall Telecom As Antennekonstruktion med udtrækkeligt antenneelement
GB2257835B (en) * 1991-07-13 1995-10-11 Technophone Ltd Retractable antenna
JP2795825B2 (ja) * 1995-06-30 1998-09-10 エスエムケイ株式会社 アンテナ装置
JP3674172B2 (ja) * 1995-09-22 2005-07-20 三菱電機株式会社 アンテナ装置
SE507244C2 (sv) * 1996-08-29 1998-04-27 Ericsson Telefon Ab L M Antennanordning och förfarande vid portabel radioutrustning samt förfarande för åstadkommande av en sådan antennanordning
US5963871A (en) * 1996-10-04 1999-10-05 Telefonaktiebolaget Lm Ericsson Retractable multi-band antennas

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001099230A1 (fr) * 2000-06-23 2001-12-27 Koninklijke Philips Electronics N.V. Systeme d'antenne
US6512489B2 (en) 2000-06-23 2003-01-28 Knonklijke Phiips Electronics N.V. Antenna arrangement
KR100796828B1 (ko) 2000-06-23 2008-01-22 엔엑스피 비 브이 안테나 배열 및 이러한 안테나 배열을 포함하는 무선 통신 장치
CN100391049C (zh) * 2000-06-23 2008-05-28 Nxp股份有限公司 天线装置

Also Published As

Publication number Publication date
CN1314014A (zh) 2001-09-19
GB2357637A8 (en) 2001-07-19
US6392604B1 (en) 2002-05-21
CN1213508C (zh) 2005-08-03
GB2357637B (en) 2003-07-16
AU5666399A (en) 2000-03-14
KR20010072684A (ko) 2001-07-31
GB2357637A (en) 2001-06-27
JP2002523949A (ja) 2002-07-30
KR100618538B1 (ko) 2006-08-31
WO2000011748A3 (fr) 2000-06-02
SE9802772D0 (sv) 1998-08-19
GB0103597D0 (en) 2001-03-28

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